CaratHunter
Plans
Marquise|Natural|GIA

1.20ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6562677258

Certificate GIA 6562677258

Diamond specifications and retailer prices

From £3,830 GBP
As of November 4, 2026
Save £3,113 GBP (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £6,943 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6562677258. Listed at 16 retailers as of November 4, 2026, with prices from £3,830 to £6,943, a £3,113 spread on the same certified stone. Wholesale Diamonds Direct lists it at £6,943. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.75°
Pavilion angle41.96°
OriginNatural
Grading LabGIA
CertificateGIA 6562677258
Dimensions10.65 × 5.51 × 3.51 mm
L/W Ratio1.93
Culet sizeNone
Top View
10.65 mm5.51 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6562677258
Side View
Table 60.0%Crown 37.75°Girdle: VTN-THKPavilion 41.96°Culet: NDepth 63.8%

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: £5,429 GBP|Low: £3,830 GBP|High: £6,943 GBP|Avg: £4,881 GBP
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
Wholesale Diamonds Direct
November 6, 2026
Retailer 6£3,830 GBP
Retailer 2£3,936 GBP
Retailer 7£3,963 GBP
Retailer 10£4,008 GBP
Retailer 11£4,052 GBP
Retailer 12£4,117 GBP
Retailer 15£4,145 GBP
Retailer 9£4,330 GBP
Retailer 4£4,617 GBP
Retailer 5£4,851 GBP
Retailer 8£4,855 GBP
Retailer 13£4,870 GBP
Retailer 1£5,429 GBP
Retailer 14£6,600 GBP
Retailer 3£6,753 GBP
Wholesale Diamonds Direct£6,943 GBP

16 data points across 16 retailers

16 retailers£3,830 GBP to £6,943 GBP

B+
Cheapest Retailer
-
£3,830 GBP
B+
Retailer 2
-
£3,936 GBP
View
B+
Retailer 3
-
£3,963 GBP
View
B+
Retailer 4
-
£4,008 GBP
View
B
Retailer 5
-
£4,052 GBP
View
B
Retailer 6
-
£4,117 GBP
View
B
Retailer 7
-
£4,145 GBP
View
B
Retailer 8
-
£4,330 GBP
View
B
Retailer 9
-
£4,617 GBP
View
B
Retailer 10
-
£4,851 GBP
View
B
Retailer 11
-
£4,855 GBP
View
B
Retailer 12
-
£4,870 GBP
View
B
Retailer 13
-
£5,429 GBP
View
B
Retailer 14
-
£6,600 GBP
View
B
Retailer 15
-
£6,753 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
600306054 · Nov 6
£6,943 GBP
$9,293 USD
View
15 more retailers have this diamond
Prices start from £3,830 GBPSave up to £3,113 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
£3,830 GBP