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Radiant|Natural|GIA

0.51ct G SI1 Radiant Natural Diamond

GD • G/SI1 • GIA 2215721678

Certificate GIA 2215721678

Diamond specifications and retailer prices

From $1,000 USD
As of November 5, 2026
Save $1,104 USD (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,104 USD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural radiant diamond

This 0.51ct natural radiant sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2215721678. Listed at 9 retailers as of November 4, 2026, with prices from $1,000 to $2,104, a $1,104 spread on the same certified stone. MOH London lists it at $2,104. 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

0.51
Carat
G
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2215721678
Dimensions5.20 × 4.15 × 2.59 mm
L/W Ratio1.25
Culet sizeNone
Top View
5.20 mm4.15 mm0.51 ctG / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2215721678
Side View
Table 70.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,104 USD|Low: $1,005 USD|High: $2,136 USD|Avg: $1,544 USD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 7, 2026
Retailer 6$1,005 USD
Retailer 2$1,300 USD
Retailer 5$1,443 USD
Retailer 7$1,506 USD
Retailer 3$1,603 USD
Retailer 4$1,778 USD
MOH London$2,104 USD

45 data points across 7 retailers

9 retailers$1,000 USD to $2,104 USD

B+
Cheapest Retailer
-
$1,000 USD
B+
Retailer 2
-
$1,005 USD
View
B
Retailer 3
-
$1,139 USD
View
B
Retailer 4
-
$1,300 USD
View
B
Retailer 5
-
$1,443 USD
View
Retailer 6
-
$1,506 USD
View
Price last confirmed 34 days ago
B
Retailer 7
-
$1,603 USD
View
B
Retailer 8
-
$1,778 USD
View
Most Expensive
B
MOH London
C7EDCC138 · Nov 4
$2,104 USD
£1,657 GBP
View
8 more retailers have this diamond
Prices start from $1,000 USDSave up to $1,104 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+
0.51ct Radiant
$1,000 USD