CaratHunter
Plans
Marquise|Natural|GIA

1.20ct G SI1 Marquise Natural Diamond

ID • G/SI1 • GIA 6545836244

Certificate GIA 6545836244

Diamond specifications and retailer prices

From £4,037 GBP
As of November 4, 2026
Save £3,221 GBP (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,258 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded G 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 6545836244. Listed at 12 retailers as of November 4, 2026, with prices from £4,037 to £7,258, a £3,221 spread on the same certified stone. Wholesale Diamonds Direct lists it at £7,258. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle38.6°
Pavilion angle38.4°
OriginNatural
Grading LabGIA
CertificateGIA 6545836244
Dimensions10.17 × 5.57 × 3.44 mm
L/W Ratio1.83
Top View
10.17 mm5.57 mm1.20 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545836244
Side View
Table 59.0%Crown 38.6°Girdle: THK-VTKPavilion 38.4°Culet: NoneDepth 61.8%

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 4
Current: £5,142 GBP|Low: £4,037 GBP|High: £6,279 GBP|Avg: £4,909 GBP|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£4,037 GBP
Retailer 6£4,311 GBP
Retailer 7£4,821 GBP
Retailer 2£4,853 GBP
Retailer 4£4,900 GBP
Retailer 1£5,142 GBP
Retailer 3£6,235 GBP

46 data points across 7 retailers

12 retailers£4,037 GBP to £7,258 GBP

B+
Cheapest Retailer
-
£4,037 GBP
B
Retailer 2
-
£4,311 GBP
View
B
Retailer 3
-
£4,821 GBP
View
B
Retailer 4
-
£4,853 GBP
View
B
Retailer 5
-
£4,900 GBP
View
B
Retailer 6
-
£5,142 GBP
View
B
Retailer 7
-
£5,155 GBP
View
B
Retailer 8
-
£5,155 GBP
View
B
Retailer 9
-
£5,231 GBP
View
B
Retailer 10
-
£5,327 GBP
View
B
Retailer 11
-
£6,235 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
235881660 · Nov 6
£7,258 GBP
$9,715 USD
View
11 more retailers have this diamond
Prices start from £4,037 GBPSave up to £3,221 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
£4,037 GBP