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0.66ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1555028435

Certificate GIA 1555028435

Diamond specifications and retailer prices

From €474 EUR
SGD 719 SGD
As of October 31, 2026
Save €434 EUR (48%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €909 EUR 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555028435. Listed at 8 retailers as of October 31, 2026, with prices from €474 to €909, a €434 spread on the same certified stone. Frank Darling lists it at €909. 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°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1555028435
Dimensions5.55 × 3.48 × 3.48 mm
L/W Ratio1.59
Culet sizeNone
Top View
5.55 mm3.48 mm0.66 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555028435
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.5%

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: €909 EUR|Low: €474 EUR|High: €963 EUR|Avg: €757 EUR|-5.6%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 5€474 EUR
Retailer 6€531 EUR
Retailer 4€689 EUR
Retailer 2€743 EUR
Retailer 3€747 EUR
Retailer 7€796 EUR
Frank Darling€909 EUR
Retailer 8€914 EUR

33 data points across 8 retailers

8 retailers€474 EUR to €909 EUR

A
Cheapest Retailer
-
€474 EUR
SGD 719 SGD
A
Retailer 2
-
€531 EUR
SGD 805 SGD
View
A
Retailer 3
-
€688 EUR
$772 USD
View
A
Retailer 4
-
€689 EUR
$773 USD
View
A
Retailer 5
-
€743 EUR
View
A
Retailer 6
-
€747 EUR
£660 GBP
View
Retailer 7
-
€796 EUR
$893 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Frank Darling
2619666HK · Nov 2
€909 EUR
$1,019 USD
View
7 more retailers have this diamond
Prices start from €474 EURSave up to €434 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
€474 EUR