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Round|Natural|GIA

1.20ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6512560368

Certificate GIA 6512560368

Diamond specifications and retailer prices

From £1,170 GBP
As of November 4, 2026
Save £349 GBP (23%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,519 GBP at Michael Trio · As of November 6, 2026
View at Michael Trio

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6512560368. Listed at 5 retailers as of November 4, 2026, with prices from £1,170 to £1,519, a £349 spread on the same certified stone. Michael Trio lists it at £1,519. 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

1.20
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6512560368
Dimensions6.86 × 6.82 × 4.20 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
6.86 mm6.82 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512560368
Side View
Table 60.0%Crown 34°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.4%

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 4
Current: £1,519 GBP|Low: £1,105 GBP|High: £1,710 GBP|Avg: £1,351 GBP|-11.2%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
November 4, 2026
Retailer 2£1,170 GBP
Retailer 4£1,218 GBP
Retailer 3£1,334 GBP
Michael Trio£1,519 GBP

8 data points across 4 retailers

5 retailers£1,170 GBP to £1,519 GBP

A
Cheapest Retailer
-
£1,170 GBP
A
Retailer 2
-
£1,218 GBP
View
Final sale: no returns
Retailer 3
-
£1,327 GBP
View
Price last confirmed 82 days ago
A
Retailer 4
-
£1,334 GBP
View
Most Expensive
B+
Michael Trio
2576656823 · Nov 6
£1,519 GBP
SGD 2,763 SGD
View
4 more retailers have this diamond
Prices start from £1,170 GBPSave up to £349 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
1.20ct Round
£1,170 GBP