CaratHunter
Plans
Marquise|Natural|GIA

1.20ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 1557164573

Certificate GIA 1557164573

Diamond specifications and retailer prices

From £2,563 GBP
As of November 6, 2026
Save £2,875 GBP (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,146 GBP at NZ Jewellers · As of October 21, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557164573. Listed at 10 retailers as of November 4, 2026, with a 112% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1557164573
Dimensions10.24 × 5.42 × 3.53 mm
L/W Ratio1.89
Girdle conditionThick to Extremely Thick
Key to symbols
Cloud, Twinning Wisp, Crystal, Feather, Needle, Knot, Indented Natural, Natural
Top View
10.24 mm5.42 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1557164573
Side View
Table 59.0%CrownGirdle: THK-XTKPavilionCulet: NoneDepth 65.3%

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: £6,146 GBP|Low: £2,543 GBP|High: £6,329 GBP|Avg: £3,778 GBP|-2.9%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5£2,563 GBP
Retailer 2£2,576 GBP
Retailer 7£2,751 GBP
Retailer 6£3,042 GBP
Retailer 9£3,358 GBP
Retailer 8£3,528 GBP
Retailer 10£3,528 GBP
Retailer 3£3,751 GBP
Retailer 4£5,437 GBP
NZ Jewellers£6,146 GBP

41 data points across 10 retailers

10 retailers£2,563 GBP to £5,437 GBP

A
Cheapest Retailer
-
£2,563 GBP
A
Retailer 2
-
£2,576 GBP
View
A
Retailer 3
-
£2,751 GBP
View
Final sale: no returns
A
Retailer 4
-
£3,042 GBP
View
Retailer 5
-
£3,358 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£3,528 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£3,528 GBP
View
Price last confirmed 15 days ago
B+
Retailer 8
-
£3,751 GBP
View
B
Retailer 9
-
£5,437 GBP
View
Most Expensive
NZ Jewellers
8e6d3230-004d-49e6-9863-3c524757f65c · Oct 21
£6,146 GBP
$8,226 USD
View
Price last confirmed 16 days ago
9 more retailers have this diamond
Prices start from £2,563 GBPSave up to £2,875 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
£2,563 GBP