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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

ID • D/SI1 • GIA 2547694625

Certificate GIA 2547694625

Diamond specifications and retailer prices

From £3,429 GBP
As of November 6, 2026
Save £2,952 GBP (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £6,381 GBP at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547694625. Listed at 8 retailers as of November 3, 2026, with prices from £3,429 to £6,381, a £2,952 spread on the same certified stone. NZ Jewellers lists it at £6,381. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle44°
Pavilion angle36.95°
OriginNatural
Grading LabGIA
CertificateGIA 2547694625
Dimensions9.79 × 5.51 × 3.46 mm
L/W Ratio1.78
Top View
9.79 mm5.51 mm1.20 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2547694625
Side View
Table 60.0%Crown 44°Girdle: Very ThickPavilion 36.95°Culet: NoneDepth 62.8%

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: Nov 6
Current: £6,381 GBP|Low: £3,429 GBP|High: £6,498 GBP|Avg: £4,407 GBP|-1.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6£3,429 GBP
Retailer 7£3,586 GBP
Retailer 5£3,721 GBP
Retailer 8£3,815 GBP
Retailer 10£3,815 GBP
Retailer 9£3,910 GBP
Retailer 11£4,281 GBP
Retailer 12£4,322 GBP
Retailer 3£4,513 GBP
Retailer 4£4,704 GBP
Retailer 2£6,077 GBP
NZ Jewellers£6,381 GBP

19 data points across 12 retailers

8 retailers£3,429 GBP to £6,381 GBP

A
Cheapest Retailer
-
£3,429 GBP
B+
Retailer 2
-
£3,586 GBP
View
B+
Retailer 3
-
£3,721 GBP
View
B+
Retailer 4
-
£3,815 GBP
View
B+
Retailer 5
-
£3,815 GBP
View
B+
Retailer 6
-
£3,910 GBP
View
B
Retailer 7
-
£6,077 GBP
View
Most Expensive
B
NZ Jewellers
ae720140-436c-4d2a-b04d-006ac9ae1218 · Nov 3
£6,381 GBP
$8,541 USD
View
7 more retailers have this diamond
Prices start from £3,429 GBPSave up to £2,952 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
£3,429 GBP