Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 2556350209

Certificate GIA 2556350209

Diamond specifications and retailer prices

From £3,082 GBP
$4,136 USD
As of November 1, 2026
Save £3,132 GBP (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £6,525 GBP at NZ Jewellers · As of October 21, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556350209. Listed at 14 retailers as of November 1, 2026, with a 102% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle41.29°
Pavilion angle37.46°
OriginNatural
Grading LabGIA
CertificateGIA 2556350209
Dimensions9.92 × 5.44 × 3.45 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.92 mm5.44 mm1.20 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556350209
Side View
Table 56.0%Crown 41.29°Girdle: VTN-VTKPavilion 37.46°Culet: NDepth 63.4%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,857 GBP|Low: £2,857 GBP|High: £6,289 GBP|Avg: £3,923 GBP|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 2£2,857 GBP
Retailer 4£3,082 GBP
Retailer 10£3,191 GBP
Retailer 8£3,262 GBP
Retailer 9£3,534 GBP
Retailer 1£3,857 GBP
Retailer 6£3,894 GBP
Retailer 3£4,078 GBP
Retailer 11£4,306 GBP
Retailer 5£4,414 GBP
Retailer 12£4,643 GBP
Retailer 7£6,214 GBP

38 data points across 12 retailers

14 retailers£3,082 GBP to £6,214 GBP

Retailer 1
-
£2,857 GBP
$3,834 USD
Price last confirmed 11 days ago
B
Retailer 2
-
£3,082 GBP
$4,136 USD
View
B
Retailer 3
-
£3,191 GBP
$4,282 USD
View
B
Retailer 4
-
£3,262 GBP
$4,378 USD
View
Final sale: no returns
Retailer 5
-
£3,534 GBP
$4,743 USD
View
Price last confirmed 11 days ago
Retailer 6
-
£3,534 GBP
$4,743 USD
View
Price last confirmed 16 days ago
Retailer 7
-
£3,534 GBP
$4,743 USD
View
Price last confirmed 17 days ago
B
Retailer 8
-
£3,857 GBP
View
B
Retailer 9
-
£3,894 GBP
View
Retailer 10
-
£4,078 GBP
$5,473 USD
View
Price last confirmed 12 days ago
Retailer 11
-
£4,306 GBP
$5,778 USD
View
Price last confirmed 10 days ago
B
Retailer 12
-
£4,414 GBP
€5,641 EUR
View
C
Retailer 13
-
£6,214 GBP
View
Most Expensive
NZ Jewellers
326dbe8b-cb7d-4f4c-ae57-41ef869c7237 · Oct 21
£6,525 GBP
$8,756 USD
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from £3,082 GBPSave up to £3,132 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
£3,082 GBP