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Round|Lab Grown|GIA

2.51ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • GIA 6391134027

Certificate GIA 6391134027

Diamond specifications and retailer prices

From $1,707 USD
As of October 30, 2026
Save $378 USD (18%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,085 USD at GemTrove · As of October 31, 2026
View at GemTrove

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6391134027. Listed at 2 retailers as of October 30, 2026, with prices from $1,707 to $2,085, a $378 spread on the same certified stone. GemTrove lists it at $2,085. 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

2.51
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 6391134027
Dimensions8.85 × 8.78 × 5.29 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.85 mm8.78 mm2.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6391134027
Side View
Table 59.0%Crown 33.5°GirdlePavilion 40.8°Culet: NoneDepth 60.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: $2,085 USD|Low: $1,179 USD|High: $5,569 USD|Avg: $2,814 USD
GemTrove
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
September 25, 2026
Retailer 2$1,707 USD
Retailer 5$1,723 USD
GemTrove$2,085 USD
Retailer 4$2,177 USD
Retailer 6$2,230 USD
Retailer 3$5,100 USD
Retailer 7$5,569 USD

6 data points across 7 retailers

2 retailers$1,707 USD to $2,085 USD

B
Cheapest Retailer
-
$1,707 USD
Most Expensive
B
GemTrove
GT-L-01034654-98 · Oct 31
$2,085 USD
A$3,208 AUD
View
1 more retailer has this diamond
Prices start from $1,707 USDSave up to $378 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.

B
2.51ct Round
$1,707 USD