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Round|Lab Grown|IGI

1.91ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG818615290

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818615290

Diamond specifications and retailer prices

From $678 USD
As of October 29, 2026
Save $4,622 USD (87%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $5,300 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818615290 or 818615290. Listed at 25 retailers as of October 29, 2026, with prices from $678 to $5,300, a $4,622 spread on the same certified stone. Do Amore Diamonds lists it at $5,300. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.91
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818615290
Dimensions8.00 × 8.04 × 4.87 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.00 mm8.04 mm1.91 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818615290
Side View
Table 58.0%Crown 34.4°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $5,300 USD|Low: $501 USD|High: $6,350 USD|Avg: $2,088 USD
Do Amore Diamonds
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Retailer 24
October 29, 2026
Retailer 4$678 USD
Retailer 21$771 USD
Retailer 7$787 USD
Retailer 14$787 USD
Retailer 6$1,136 USD
Retailer 9$1,226 USD
Retailer 24$1,230 USD
Retailer 5$1,245 USD
Retailer 19$1,321 USD
Retailer 23$1,364 USD
Retailer 2$1,386 USD
Retailer 18$1,468 USD
Retailer 20$1,596 USD
Retailer 11$1,986 USD
Retailer 17$2,101 USD
Retailer 16$2,442 USD
Retailer 3$2,515 USD
Retailer 8$2,647 USD
Retailer 10$2,698 USD
Retailer 12$3,107 USD
Retailer 13$3,429 USD
Retailer 15$3,672 USD
Retailer 22$4,260 USD
Do Amore Diamonds$5,300 USD

34 data points across 24 retailers

25 retailers$678 USD to $5,300 USD

A
Cheapest Retailer
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$678 USD
A
Retailer 2
-
$771 USD
View
Final sale: no returns
Retailer 3
-
$787 USD
View
Price last confirmed 13 days ago
A
Retailer 4
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$787 USD
View
A
Retailer 5
-
$1,136 USD
A$1,748 AUD
View
A
Retailer 6
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$1,226 USD
View
A
Retailer 7
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$1,230 USD
View
A
Retailer 8
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$1,245 USD
View
A
Retailer 9
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$1,321 USD
€1,258 EUR
View
B+
Retailer 10
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$1,364 USD
View
B+
Retailer 11
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$1,386 USD
£1,091 GBP
View
B+
Retailer 12
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$1,468 USD
View
B+
Retailer 13
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$1,596 USD
ZAR 25,791 ZAR
View
B+
Retailer 14
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$1,986 USD
View
B+
Retailer 15
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$2,101 USD
View
B
Retailer 16
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$2,442 USD
View
B
Retailer 17
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$2,515 USD
View
B
Retailer 18
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$2,647 USD
CA$3,676 CAD
View
B
Retailer 19
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$2,698 USD
View
B
Retailer 20
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$3,107 USD
View
B
Retailer 21
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$3,107 USD
View
B
Retailer 22
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$3,429 USD
£2,700 GBP
View
B
Retailer 23
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$3,672 USD
View
B
Retailer 24
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$4,260 USD
View
Most Expensive
B
Do Amore Diamonds
20-E93168 · Oct 29
$5,300 USD
View
24 more retailers have this diamond
Prices start from $678 USDSave up to $4,622 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.91ct Round
$678 USD