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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6562043568

Certificate GIA 6562043568

Diamond specifications and retailer prices

From £1,512 GBP
SGD 2,737 SGD
As of October 31, 2026
Save £1,578 GBP (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,090 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562043568. Listed at 11 retailers as of October 27, 2026, with prices from £1,512 to £3,090, a £1,578 spread on the same certified stone. Wholesale Diamonds Direct lists it at £3,090. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle39.4°
Pavilion angle38.34°
OriginNatural
Grading LabGIA
CertificateGIA 6562043568
Dimensions10.77 × 5.52 × 3.41 mm
L/W Ratio1.95
Culet sizeNone
Top View
10.77 mm5.52 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6562043568
Side View
Table 59.0%Crown 39.4°Girdle: STK-THKPavilion 38.34°Culet: NoneDepth 61.7%

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: £2,444 GBP|Low: £1,386 GBP|High: £3,371 GBP|Avg: £2,253 GBP|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 2, 2026
Retailer 3£1,386 GBP
Retailer 9£1,512 GBP
Retailer 7£1,866 GBP
Retailer 6£1,892 GBP
Retailer 5£1,898 GBP
Retailer 2£2,067 GBP
Retailer 4£2,212 GBP
Retailer 10£2,228 GBP
Retailer 11£2,315 GBP
Retailer 1£2,444 GBP
Retailer 8£2,894 GBP
Wholesale Diamonds Direct£3,090 GBP

34 data points across 12 retailers

11 retailers£1,512 GBP to £3,090 GBP

A
Cheapest Retailer
-
£1,512 GBP
SGD 2,737 SGD
B+
Retailer 2
-
£1,866 GBP
$2,500 USD
View
B+
Retailer 3
-
£1,892 GBP
$2,535 USD
View
B+
Retailer 4
-
£1,898 GBP
$2,544 USD
View
B+
Retailer 5
-
£2,067 GBP
SGD 3,743 SGD
View
B+
Retailer 6
-
£2,212 GBP
$2,964 USD
View
B+
Retailer 7
-
£2,228 GBP
$2,985 USD
View
B+
Retailer 8
-
£2,315 GBP
$3,102 USD
View
B
Retailer 9
-
£2,444 GBP
€3,119 EUR
View
B
Retailer 10
-
£2,894 GBP
$3,877 USD
View
Most Expensive
B
Wholesale Diamonds Direct
348918922 · Oct 27
£3,090 GBP
$4,140 USD
View
10 more retailers have this diamond
Prices start from £1,512 GBPSave up to £1,578 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 Marquise
£1,512 GBP