Round|Lab Grown|IGI

1.51ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG823695128

Shape and cutting style on the report: Round brilliant

Certificate IGI LG823695128

Diamond specifications and retailer prices

From $470 USD
As of October 29, 2026
Save $4,400 USD (90%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $4,870 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.51ct lab-grown round diamond

This 1.51ct 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 LG823695128 or 823695128. Listed at 23 retailers as of October 29, 2026, with prices from $470 to $4,870, a $4,400 spread on the same certified stone. Brilliant Earth lists it at $4,870. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823695128
Dimensions7.34 × 7.37 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
7.34 mm7.37 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823695128
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.4%

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: $4,870 USD|Low: $470 USD|High: $4,880 USD|Avg: $1,912 USD|-0.2%
Brilliant Earth
Retailer 2
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Retailer 22
October 30, 2026
Retailer 17$470 USD
Retailer 2$527 USD
Retailer 4$583 USD
Retailer 21$818 USD
Retailer 11$960 USD
Retailer 8$1,145 USD
Retailer 22$1,145 USD
Retailer 9$1,152 USD
Retailer 13$1,365 USD
Retailer 16$1,524 USD
Retailer 19$1,586 USD
Retailer 5$1,599 USD
Retailer 20$1,829 USD
Retailer 3$1,874 USD
Retailer 6$2,287 USD
Retailer 15$2,615 USD
Retailer 14$2,947 USD
Retailer 7$3,292 USD
Retailer 12$3,344 USD
Retailer 10$3,450 USD
Retailer 18$3,749 USD
Brilliant Earth$4,870 USD

22 data points across 22 retailers

23 retailers$470 USD to $4,870 USD

A
Cheapest Retailer
-
$470 USD
A
Retailer 2
-
$527 USD
View
A
Retailer 3
-
$583 USD
View
A
Retailer 4
-
$818 USD
View
A
Retailer 5
-
$960 USD
View
Final sale: no returns
Retailer 6
-
$1,016 USD
View
Price last confirmed 13 days ago
B+
Retailer 7
-
$1,145 USD
View
B+
Retailer 8
-
$1,145 USD
View
B+
Retailer 9
-
$1,152 USD
HK$9,000 HKD
View
B+
Retailer 10
-
$1,365 USD
£1,075 GBP
View
B+
Retailer 11
-
$1,524 USD
£1,200 GBP
View
B+
Retailer 12
-
$1,586 USD
€1,510 EUR
View
B+
Retailer 13
-
$1,599 USD
View
B+
Retailer 14
-
$1,829 USD
ZAR 29,541 ZAR
View
B+
Retailer 15
-
$1,874 USD
View
B
Retailer 16
-
$2,287 USD
View
Retailer 17
-
$2,615 USD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$2,947 USD
View
B
Retailer 19
-
$3,292 USD
View
B
Retailer 20
-
$3,344 USD
SGD 4,519 SGD
View
B
Retailer 21
-
$3,450 USD
View
B
Retailer 22
-
$3,749 USD
£2,952 GBP
View
Most Expensive
B
Brilliant Earth
21547131A · Oct 29
$4,870 USD
View
22 more retailers have this diamond
Prices start from $470 USDSave up to $4,400 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
1.51ct Round
$470 USD