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0.66ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6542345500

Certificate GIA 6542345500

Diamond specifications and retailer prices

From €427 EUR
SGD 647 SGD
As of October 31, 2026
Save €411 EUR (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €838 EUR at Frank Darling · As of November 3, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6542345500. Listed at 8 retailers as of October 31, 2026, with prices from €427 to €838, a €411 spread on the same certified stone. Frank Darling lists it at €838. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6542345500
Dimensions5.56 × 5.58 × 3.47 mm
L/W Ratio1.00
Top View
5.56 mm5.58 mm0.66 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542345500
Side View
Table 58.0%Crown 36.5°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.3%

Caratlytics Score

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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 31
Current: €838 EUR|Low: €427 EUR|High: €894 EUR|Avg: €674 EUR|-6.3%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 3, 2026
Retailer 6€427 EUR
Retailer 2€455 EUR
Retailer 5€605 EUR
Retailer 3€661 EUR
Retailer 4€674 EUR
Retailer 7€703 EUR
Retailer 8€806 EUR
Frank Darling€838 EUR

30 data points across 8 retailers

8 retailers€427 EUR to €838 EUR

A
Cheapest Retailer
-
€427 EUR
SGD 647 SGD
A
Retailer 2
-
€455 EUR
SGD 690 SGD
View
A
Retailer 3
-
€604 EUR
$677 USD
View
A
Retailer 4
-
€605 EUR
$679 USD
View
A
Retailer 5
-
€661 EUR
View
A
Retailer 6
-
€674 EUR
£595 GBP
View
Retailer 7
-
€703 EUR
$788 USD
View
Price last confirmed 7 days ago
Most Expensive
A
Frank Darling
2571627HK · Nov 3
€838 EUR
$939 USD
View
7 more retailers have this diamond
Prices start from €427 EURSave up to €411 EUR

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
€427 EUR