Marquise|Natural|GIA

1.20ct G SI2 Marquise Natural Diamond

GD • G/SI2 • GIA 5553615756

Certificate GIA 5553615756

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)
17 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 5553615756. Listed at 17 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
SymmetryExcellent
FluorescenceNone
Crown angle43.11°
Pavilion angle37.6°
OriginNatural
Grading LabGIA
CertificateGIA 5553615756
Dimensions9.95 × 5.46 × 3.43 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.95 mm5.46 mm1.20 ctG / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553615756
Side View
Table 61.0%Crown 43.11°Girdle: STK-VTKPavilion 37.6°Culet: NoneDepth 62.9%

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 1
Current: £6,525 GBP|Low: £2,857 GBP|High: £6,525 GBP|Avg: £4,041 GBP
NZ Jewellers
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
November 2, 2026
Retailer 4£2,857 GBP
Retailer 6£2,868 GBP
Retailer 15£3,082 GBP
Retailer 11£3,262 GBP
Retailer 7£3,396 GBP
Retailer 2£3,857 GBP
Retailer 9£3,894 GBP
Retailer 13£3,964 GBP
Retailer 14£3,964 GBP
Retailer 5£4,078 GBP
Retailer 12£4,099 GBP
Retailer 3£4,306 GBP
Retailer 8£4,414 GBP
Retailer 10£6,214 GBP
NZ Jewellers£6,525 GBP

33 data points across 15 retailers

17 retailers£3,082 GBP to £6,214 GBP

Retailer 1
-
£2,857 GBP
$3,834 USD
Price last confirmed 13 days ago
B+
Retailer 2
-
£3,082 GBP
$4,136 USD
View
B
Retailer 3
-
£3,262 GBP
$4,378 USD
View
Final sale: no returns
B
Retailer 4
-
£3,297 GBP
$4,425 USD
View
Retailer 5
-
£3,534 GBP
$4,743 USD
View
Price last confirmed 16 days ago
Retailer 6
-
£3,534 GBP
$4,743 USD
View
Price last confirmed 13 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
B
Retailer 10
-
£3,964 GBP
$5,320 USD
View
B
Retailer 11
-
£3,964 GBP
$5,320 USD
View
Retailer 12
-
£4,078 GBP
$5,473 USD
View
Price last confirmed 12 days ago
B
Retailer 13
-
£4,099 GBP
$5,500 USD
View
Retailer 14
-
£4,306 GBP
$5,778 USD
View
Price last confirmed 18 days ago
B
Retailer 15
-
£4,414 GBP
€5,641 EUR
View
B
Retailer 16
-
£6,214 GBP
View
Most Expensive
NZ Jewellers
fdee6aa6-9f9f-4667-91a1-f8777d2dc0ff · Oct 21
£6,525 GBP
$8,756 USD
View
Price last confirmed 12 days ago
16 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