Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 7552545761

Certificate GIA 7552545761

Diamond specifications and retailer prices

From £3,566 GBP
As of November 5, 2026
Save £1,490 GBP (29%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £6,762 GBP at NZ Jewellers · As of September 20, 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 H 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 7552545761. Listed at 21 retailers as of November 5, 2026, with a 42% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7552545761
Dimensions10.41 × 5.48 × 3.47 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Cavity
Top View
10.41 mm5.48 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7552545761
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.3%

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: £5,056 GBP|Low: £2,935 GBP|High: £6,517 GBP|Avg: £4,185 GBP|+28.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 14£2,935 GBP
Retailer 2£3,091 GBP
Retailer 3£3,390 GBP
Retailer 6£3,479 GBP
Retailer 9£3,566 GBP
Retailer 5£3,644 GBP
Retailer 13£3,706 GBP
Retailer 4£3,763 GBP
Retailer 10£3,827 GBP
Retailer 11£3,921 GBP
Retailer 8£4,075 GBP
Retailer 12£4,437 GBP
Retailer 16£4,765 GBP
Retailer 1£5,056 GBP
Retailer 15£5,802 GBP
Retailer 7£6,474 GBP

30 data points across 16 retailers

21 retailers£3,566 GBP to £5,056 GBP

Retailer 1
-
£2,935 GBP
Price last confirmed 12 days ago
Retailer 2
-
£3,091 GBP
View
Price last confirmed 15 days ago
Retailer 3
-
£3,390 GBP
View
Price last confirmed 15 days ago
Retailer 4
-
£3,479 GBP
View
Price last confirmed 14 days ago
B+
Retailer 5
-
£3,566 GBP
View
B
Retailer 6
-
£3,687 GBP
View
Retailer 7
-
£3,706 GBP
View
Price last confirmed 13 days ago
Retailer 8
-
£3,763 GBP
View
Price last confirmed 14 days ago
B
Retailer 9
-
£3,827 GBP
View
B
Retailer 10
-
£3,921 GBP
View
B
Retailer 11
-
£4,026 GBP
View
Retailer 12
-
£4,043 GBP
View
Price last confirmed 45 days ago
Retailer 13
-
£4,043 GBP
View
Price last confirmed 21 days ago
Retailer 14
-
£4,075 GBP
View
Price last confirmed 28 days ago
Retailer 15
-
£4,158 GBP
View
Price last confirmed 19 days ago
Retailer 16
-
£4,665 GBP
View
Price last confirmed 45 days ago
Retailer 17
-
£4,765 GBP
View
Price last confirmed 15 days ago
B
Retailer 18
-
£5,056 GBP
View
Retailer 19
-
£5,802 GBP
View
Price last confirmed 14 days ago
Retailer 20
-
£6,474 GBP
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
756ae5f0-3390-4d26-924a-6051f73935bf · Sep 20
£6,762 GBP
$9,051 USD
View
Price last confirmed 46 days ago
20 more retailers have this diamond
Prices start from £3,566 GBPSave up to £1,490 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
£3,566 GBP