CaratHunter
Plans
Marquise|Natural|GIA

1.20ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1555950034

Certificate GIA 1555950034

Diamond specifications and retailer prices

From £1,989 GBP
As of November 5, 2026
Save £2,283 GBP (53%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,272 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555950034. Listed at 13 retailers as of November 5, 2026, with prices from £1,989 to £4,272, a £2,283 spread on the same certified stone. NZ Jewellers lists it at £4,272. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1555950034
Dimensions11.01 × 5.47 × 3.30 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizeNone
Top View
11.01 mm5.47 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1555950034
Side View
Table 63.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 60.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,508 GBP|Low: £1,989 GBP|High: £4,150 GBP|Avg: £2,547 GBP|-1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£1,989 GBP
Retailer 5£2,017 GBP
Retailer 7£2,086 GBP
Retailer 9£2,222 GBP
Retailer 8£2,307 GBP
Retailer 1£2,508 GBP
Retailer 3£2,537 GBP
Retailer 2£2,686 GBP
Retailer 4£4,090 GBP

43 data points across 9 retailers

13 retailers£1,989 GBP to £4,272 GBP

B+
Cheapest Retailer
-
£1,989 GBP
B+
Retailer 2
-
£2,017 GBP
View
B+
Retailer 3
-
£2,086 GBP
View
B
Retailer 4
-
£2,222 GBP
View
Retailer 5
-
£2,222 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£2,307 GBP
View
B+
Retailer 7
-
£2,508 GBP
View
B+
Retailer 8
-
£2,537 GBP
View
B
Retailer 9
-
£2,563 GBP
View
B
Retailer 10
-
£2,686 GBP
View
Retailer 11
-
£2,844 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£4,090 GBP
View
Most Expensive
C
NZ Jewellers
bd7e5fc3-cc88-4599-9f95-a01c6d533cfe · Nov 5
£4,272 GBP
$5,750 USD
View
12 more retailers have this diamond
Prices start from £1,989 GBPSave up to £2,283 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.

B+
1.20ct Marquise
£1,989 GBP