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Round|Natural|GIA

0.66ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6243098119

Certificate GIA 6243098119

Diamond specifications and retailer prices

From $767 USD
As of October 31, 2026
Save $483 USD (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,250 USD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.66ct natural round diamond

This 0.66ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6243098119. Listed at 12 retailers as of October 31, 2026, with prices from $767 to $1,250, a $483 spread on the same certified stone. Frank Darling lists it at $1,250. 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

0.66
Carat
H
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6243098119
Dimensions5.53 × 5.56 × 3.48 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.53 mm5.56 mm0.66 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6243098119
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,250 USD|Low: $767 USD|High: $1,250 USD|Avg: $973 USD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3$767 USD
Retailer 11$830 USD
Retailer 9$836 USD
Retailer 6$853 USD
Retailer 2$930 USD
Retailer 4$964 USD
Retailer 8$964 USD
Retailer 10$1,092 USD
Retailer 5$1,117 USD
Retailer 7$1,237 USD
Frank Darling$1,250 USD

17 data points across 11 retailers

12 retailers$767 USD to $1,250 USD

A
Cheapest Retailer
-
$767 USD
A
Retailer 2
-
$804 USD
SGD 1,086 SGD
View
A
Retailer 3
-
$830 USD
View
A
Retailer 4
-
$836 USD
SGD 1,130 SGD
View
B+
Retailer 5
-
$853 USD
View
B+
Retailer 6
-
$930 USD
£732 GBP
View
B+
Retailer 7
-
$964 USD
View
B+
Retailer 8
-
$964 USD
View
B+
Retailer 9
-
$1,092 USD
£860 GBP
View
B+
Retailer 10
-
$1,117 USD
€1,064 EUR
View
Retailer 11
-
$1,237 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Frank Darling
2706048HK · Nov 2
$1,250 USD
View
11 more retailers have this diamond
Prices start from $767 USDSave up to $483 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
0.66ct Round
$767 USD