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Round|Lab Grown|IGI

1.89ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG758560174

Shape and cutting style on the report: Round brilliant

Certificate IGI LG758560174

Diamond specifications and retailer prices

From $248 USD
As of October 26, 2026
Save $1,022 USD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,270 USD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.89ct lab-grown round diamond

This 1.89ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758560174 or 758560174. Listed at 19 retailers as of October 26, 2026, with prices from $248 to $1,270, a $1,022 spread on the same certified stone. Brilliant Earth lists it at $1,270. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.89
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758560174
Dimensions7.92 × 7.88 × 4.91 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.92 mm7.88 mm1.89 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758560174
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

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 26
Current: $1,270 USD|Low: $246 USD|High: $1,303 USD|Avg: $654 USD
Brilliant Earth
Retailer 2
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 6$248 USD
Retailer 19$277 USD
Retailer 18$287 USD
Retailer 3$307 USD
Retailer 16$346 USD
Retailer 11$480 USD
Retailer 13$480 USD
Retailer 2$486 USD
Retailer 7$515 USD
Retailer 10$572 USD
Retailer 14$579 USD
Retailer 5$623 USD
Retailer 17$671 USD
Retailer 4$775 USD
Retailer 8$965 USD
Retailer 12$983 USD
Retailer 9$987 USD
Retailer 15$1,233 USD
Brilliant Earth$1,270 USD

35 data points across 19 retailers

19 retailers$248 USD to $1,270 USD

A
Cheapest Retailer
-
$248 USD
A
Retailer 2
-
$277 USD
View
Final sale: no returns
A
Retailer 3
-
$287 USD
View
A
Retailer 4
-
$307 USD
View
A
Retailer 5
-
$346 USD
HK$2,700 HKD
View
A
Retailer 6
-
$480 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
$480 USD
£378 GBP
View
A
Retailer 8
-
$486 USD
€463 EUR
View
B+
Retailer 9
-
$515 USD
View
A
Retailer 10
-
$572 USD
View
A
Retailer 11
-
$579 USD
£456 GBP
View
B+
Retailer 12
-
$623 USD
A$958 AUD
View
B+
Retailer 13
-
$671 USD
View
B+
Retailer 14
-
$775 USD
View
B+
Retailer 15
-
$965 USD
View
B+
Retailer 16
-
$983 USD
SGD 1,328 SGD
View
B+
Retailer 17
-
$987 USD
View
B
Retailer 18
-
$1,233 USD
£971 GBP
View
Most Expensive
B
Brilliant Earth
21805874A · Oct 29
$1,270 USD
View
18 more retailers have this diamond
Prices start from $248 USDSave up to $1,022 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
1.89ct Round
$248 USD