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Round|Natural|IGI

6.51ct H SI1 Round Natural Diamond

GD • H/SI1 • IGI 635474011

Certificate IGI 635474011

Diamond specifications and retailer prices

From $233,782 NZD
€125,486 EUR
As of November 1, 2026
2 retailers carry this diamond
Most expensive: $233,782 NZD at Yorxs
View at Yorxs

About this 6.51ct natural round diamond

This 6.51ct natural round sits in the over five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI 635474011. Listed at 2 retailers as of November 1, 2026. 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

6.51
Carat
H
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabIGI
CertificateIGI 635474011
Dimensions11.77 × 11.72 × 7.47 mm
L/W Ratio1.00
Top View
11.77 mm11.72 mm6.51 ctH / SI1
OriginNatural
CutGood
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI 635474011
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: $171,768 NZD|Low: $171,638 NZD|High: $235,433 NZD|Avg: $202,963 NZD|-0.7%
Retailer 1
Retailer 2
Yorxs
November 1, 2026
Retailer 1$171,768 NZD
Retailer 2$207,992 NZD
Yorxs$233,782 NZD

37 data points across 3 retailers

2 retailers

Retailer 1
-
$171,768 NZD
₹9,219,887 INR
Price last confirmed 17 days ago
Most Expensive
B
Yorxs
407-50A · Nov 1
$233,782 NZD
€125,486 EUR
View
1 more retailer has this diamond

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
6.51ct Round
$233,782 NZD