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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 7551514553

Certificate GIA 7551514553

Diamond specifications and retailer prices

From £2,129 GBP
As of November 5, 2026
Save £2,442 GBP (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,570 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551514553. Listed at 14 retailers as of November 5, 2026, with prices from £2,129 to £4,570, a £2,442 spread on the same certified stone. NZ Jewellers lists it at £4,570. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551514553
Dimensions10.58 × 5.54 × 3.42 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizeNone
Top View
10.58 mm5.54 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7551514553
Side View
Table 60.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.7%

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: £2,545 GBP|Low: £2,129 GBP|High: £4,439 GBP|Avg: £2,793 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 7£2,129 GBP
Retailer 6£2,129 GBP
Retailer 8£2,232 GBP
Retailer 9£2,468 GBP
Retailer 1£2,545 GBP
Retailer 3£2,698 GBP
Retailer 2£2,875 GBP
Retailer 4£3,201 GBP
Retailer 5£4,374 GBP

41 data points across 9 retailers

14 retailers£2,129 GBP to £4,570 GBP

B+
Cheapest Retailer
-
£2,129 GBP
B+
Retailer 2
-
£2,129 GBP
View
B+
Retailer 3
-
£2,232 GBP
View
B
Retailer 4
-
£2,377 GBP
View
Retailer 5
-
£2,377 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£2,468 GBP
View
B+
Retailer 7
-
£2,545 GBP
View
B
Retailer 8
-
£2,698 GBP
View
B
Retailer 9
-
£2,742 GBP
View
B
Retailer 10
-
£2,875 GBP
View
Retailer 11
-
£2,972 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£3,201 GBP
View
B
Retailer 13
-
£4,374 GBP
View
Most Expensive
C
NZ Jewellers
e008bd19-801b-4e79-8965-be14f37f4664 · Nov 5
£4,570 GBP
$6,117 USD
View
13 more retailers have this diamond
Prices start from £2,129 GBPSave up to £2,442 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
£2,129 GBP