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Round|Natural|GIA

0.66ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 3565520505

Certificate GIA 3565520505

Diamond specifications and retailer prices

From £390 GBP
₹49,839 INR
As of November 2, 2026
Save £598 GBP (61%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £988 GBP at MOH London · As of November 2, 2026
View at MOH London

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 3565520505. Listed at 7 retailers as of November 2, 2026, with prices from £390 to £988, a £598 spread on the same certified stone. MOH London lists it at £988. 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
OriginNatural
Grading LabGIA
CertificateGIA 3565520505
Dimensions5.53 × 5.57 × 3.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
5.53 mm5.57 mm0.66 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3565520505
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 62.5%

Caratlytics Score

How it works →
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: Nov 2
Current: £988 GBP|Low: £390 GBP|High: £998 GBP|Avg: £647 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 3, 2026
Retailer 3£390 GBP
Retailer 5£540 GBP
Retailer 6£600 GBP
Retailer 2£643 GBP
Retailer 4£700 GBP
MOH London£988 GBP

27 data points across 6 retailers

7 retailers£390 GBP to £988 GBP

A
Cheapest Retailer
-
£390 GBP
₹49,839 INR
A
Retailer 2
-
£496 GBP
A$1,025 AUD
View
A
Retailer 3
-
£540 GBP
$725 USD
View
A
Retailer 4
-
£600 GBP
$805 USD
View
A
Retailer 5
-
£643 GBP
View
A
Retailer 6
-
£700 GBP
€894 EUR
View
Most Expensive
B
MOH London
C6A258E8A · Nov 2
£988 GBP
View
6 more retailers have this diamond
Prices start from £390 GBPSave up to £598 GBP

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
£390 GBP