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Radiant|Lab Grown|GIA

2.51ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • GIA 6501487009

Certificate GIA 6501487009

Diamond specifications and retailer prices

From $596 USD
As of October 30, 2026
Save $2,618 USD (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $3,214 USD at MOH London · As of October 26, 2026
View at MOH London

About this 2.51ct lab-grown radiant diamond

This 2.51ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6501487009. Listed at 21 retailers as of October 26, 2026, with prices from $596 to $3,214, a $2,618 spread on the same certified stone. MOH London lists it at $3,214. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
E
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6501487009
Dimensions9.87 × 6.65 × 4.44 mm
L/W Ratio1.48
Top View
9.87 mm6.65 mm2.51 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501487009
Side View
Table 65.0%CrownGirdle: ThickPavilionCulet: NoneDepth 66.8%

Caratlytics Score

How it works →
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 30
Current: $3,214 USD|Low: $572 USD|High: $3,820 USD|Avg: $1,283 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 3$596 USD
Retailer 8$668 USD
Retailer 4$739 USD
Retailer 6$739 USD
Retailer 13$806 USD
Retailer 12$870 USD
Retailer 11$929 USD
Retailer 7$990 USD
Retailer 16$1,045 USD
Retailer 9$1,073 USD
Retailer 2$1,074 USD
Retailer 15$1,835 USD
Retailer 5$1,945 USD
Retailer 14$1,965 USD
Retailer 10$2,440 USD
MOH London$3,214 USD

38 data points across 16 retailers

21 retailers$596 USD to $3,214 USD

A
Cheapest Retailer
-
$596 USD
A
Retailer 2
-
$668 USD
View
Final sale: no returns
A
Retailer 3
-
$668 USD
View
B+
Retailer 4
-
$739 USD
View
Retailer 5
-
$739 USD
View
Price last confirmed 15 days ago
B+
Retailer 6
-
$806 USD
HK$6,300 HKD
View
B+
Retailer 7
-
$870 USD
View
B+
Retailer 8
-
$929 USD
£731 GBP
View
B+
Retailer 9
-
$990 USD
View
B+
Retailer 10
-
$1,022 USD
View
B+
Retailer 11
-
$1,045 USD
View
B+
Retailer 12
-
$1,073 USD
£845 GBP
View
B+
Retailer 13
-
$1,074 USD
€1,023 EUR
View
B
Retailer 14
-
$1,835 USD
View
B
Retailer 15
-
$1,945 USD
View
Retailer 16
-
$1,965 USD
View
Price last confirmed 10 days ago
B
Retailer 17
-
$2,172 USD
View
B
Retailer 18
-
$2,392 USD
View
B
Retailer 19
-
$2,440 USD
View
B
Retailer 20
-
$2,456 USD
£1,934 GBP
View
Most Expensive
B
MOH London
6501487009 · Oct 26
$3,214 USD
£2,531 GBP
View
20 more retailers have this diamond
Prices start from $596 USDSave up to $2,618 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
2.51ct Radiant
$596 USD