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Marquise|Natural|GIA

1.20ct K SI1 Marquise Natural Diamond

VG • K/SI1 • GIA 1567161358

Certificate GIA 1567161358

Diamond specifications and retailer prices

From £1,729 GBP
As of November 5, 2026
Save £1,234 GBP (42%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,963 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1567161358. Listed at 14 retailers as of November 5, 2026, with prices from £1,729 to £2,963, a £1,234 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,963. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle41.01°
Pavilion angle39.82°
OriginNatural
Grading LabGIA
CertificateGIA 1567161358
Dimensions10.03 × 5.41 × 3.54 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.03 mm5.41 mm1.20 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1567161358
Side View
Table 60.0%Crown 41.01°Girdle: VTN-VTKPavilion 39.82°Culet: NoneDepth 65.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,799 GBP|Low: £1,719 GBP|High: £3,142 GBP|Avg: £2,178 GBP|-5.9%
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
Wholesale Diamonds Direct
November 6, 2026
Retailer 8£1,729 GBP
Retailer 1£1,799 GBP
Retailer 12£1,818 GBP
Retailer 10£1,830 GBP
Retailer 4£1,860 GBP
Retailer 5£1,950 GBP
Retailer 9£1,957 GBP
Retailer 3£1,993 GBP
Retailer 13£2,152 GBP
Retailer 2£2,244 GBP
Retailer 6£2,295 GBP
Retailer 7£2,347 GBP
Retailer 11£2,790 GBP
Wholesale Diamonds Direct£2,963 GBP

30 data points across 14 retailers

14 retailers£1,729 GBP to £2,963 GBP

A
Cheapest Retailer
-
£1,729 GBP
B+
Retailer 2
-
£1,799 GBP
View
B+
Retailer 3
-
£1,818 GBP
View
B+
Retailer 4
-
£1,830 GBP
View
B+
Retailer 5
-
£1,860 GBP
View
B+
Retailer 6
-
£1,950 GBP
View
B+
Retailer 7
-
£1,957 GBP
View
B+
Retailer 8
-
£1,993 GBP
View
B+
Retailer 9
-
£2,152 GBP
View
B
Retailer 10
-
£2,244 GBP
View
B
Retailer 11
-
£2,295 GBP
View
B
Retailer 12
-
£2,347 GBP
View
B
Retailer 13
-
£2,790 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
348918905 · Nov 6
£2,963 GBP
$3,966 USD
View
13 more retailers have this diamond
Prices start from £1,729 GBPSave up to £1,234 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
£1,729 GBP