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Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

VG • G/SI2 • GIA 2557752766

Certificate GIA 2557752766

Diamond specifications and retailer prices

From £2,621 GBP
$3,518 USD
As of October 31, 2026
Save £2,076 GBP (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,698 GBP at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

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 SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557752766. Listed at 13 retailers as of October 31, 2026, with prices from £2,621 to £4,698, a £2,076 spread on the same certified stone. Helzberg Diamonds lists it at £4,698. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
G
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.74°
Pavilion angle38.88°
OriginNatural
Grading LabGIA
CertificateGIA 2557752766
Dimensions9.99 × 5.39 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
9.99 mm5.39 mm1.20 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557752766
Side View
Table 58.0%Crown 40.74°Girdle: STK-VTKPavilion 38.88°Culet: NoneDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £4,698 GBP|Low: £2,621 GBP|High: £4,891 GBP|Avg: £3,369 GBP|-3.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 3, 2026
Retailer 9£2,621 GBP
Retailer 4£2,638 GBP
Retailer 8£2,670 GBP
Retailer 7£2,800 GBP
Retailer 3£2,861 GBP
Retailer 2£2,995 GBP
Retailer 10£3,328 GBP
Retailer 12£3,360 GBP
Retailer 5£3,385 GBP
Retailer 6£3,637 GBP
Retailer 11£4,674 GBP
Helzberg Diamonds£4,698 GBP

38 data points across 12 retailers

13 retailers£2,621 GBP to £4,698 GBP

A
Cheapest Retailer
-
£2,621 GBP
$3,518 USD
A
Retailer 2
-
£2,638 GBP
$3,540 USD
View
A
Retailer 3
-
£2,670 GBP
SGD 4,842 SGD
View
B+
Retailer 4
-
£2,800 GBP
$3,758 USD
View
B+
Retailer 5
-
£2,861 GBP
SGD 5,188 SGD
View
B+
Retailer 6
-
£2,995 GBP
View
B+
Retailer 7
-
£3,328 GBP
$4,466 USD
View
B+
Retailer 8
-
£3,360 GBP
$4,508 USD
View
B+
Retailer 9
-
£3,385 GBP
€4,326 EUR
View
B
Retailer 10
-
£3,497 GBP
$4,693 USD
View
B+
Retailer 11
-
£3,637 GBP
$4,880 USD
View
Retailer 12
-
£4,674 GBP
$6,273 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Helzberg Diamonds
XZRILLNNLINMM · Nov 2
£4,698 GBP
$6,304 USD
View
12 more retailers have this diamond
Prices start from £2,621 GBPSave up to £2,076 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.

A
1.20ct Marquise
£2,621 GBP