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Radiant|Natural|GIA

2.51ct K SI2 Radiant Natural Diamond

VG • K/SI2 • GIA 6421042796

Certificate GIA 6421042796

Diamond specifications and retailer prices

From $9,704 USD
As of November 6, 2026
Save $2,494 USD (20%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $12,198 USD at 77 Diamonds · As of November 7, 2026
View at 77 Diamonds

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6421042796. Listed at 2 retailers as of November 6, 2026, with prices from $9,704 to $12,198, a $2,494 spread on the same certified stone. 77 Diamonds lists it at $12,198. 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
K
Color
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6421042796
Dimensions8.17 × 6.65 × 4.89 mm
L/W Ratio1.23
Top View
8.17 mm6.65 mm2.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6421042796
Side View
Table 62.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 73.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $12,198 USD|Low: $9,704 USD|High: $12,393 USD|Avg: $11,070 USD|+0.8%
77 Diamonds
Retailer 2
November 7, 2026
Retailer 2$9,704 USD
77 Diamonds$12,198 USD

46 data points across 2 retailers

2 retailers$9,704 USD to $12,198 USD

A
Cheapest Retailer
-
$9,704 USD
Most Expensive
B+
77 Diamonds
RADMBDGECHCBM · Nov 7
$12,198 USD
£9,604 GBP
View
1 more retailer has this diamond
Prices start from $9,704 USDSave up to $2,494 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
$9,704 USD