Marquise|Natural|GIA

1.20ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 5546487393

Certificate GIA 5546487393

Diamond specifications and retailer prices

From £1,633 GBP
As of November 4, 2026
Save £1,912 GBP (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £4,445 GBP at NZ Jewellers · As of October 17, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546487393. Listed at 21 retailers as of November 4, 2026, with a 117% 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
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.92°
Pavilion angle40.26°
OriginNatural
Grading LabGIA
CertificateGIA 5546487393
Dimensions9.88 × 5.42 × 3.67 mm
L/W Ratio1.82
Top View
9.88 mm5.42 mm1.20 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546487393
Side View
Table 57.0%Crown 43.92°Girdle: THK-VTKPavilion 40.26°Culet: NoneDepth 67.7%

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: £1,670 GBP|Low: £1,633 GBP|High: £3,598 GBP|Avg: £2,445 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6£1,633 GBP
Retailer 1£1,670 GBP
Retailer 9£1,817 GBP
Retailer 7£2,113 GBP
Retailer 2£2,175 GBP
Retailer 4£2,251 GBP
Retailer 3£2,481 GBP
Retailer 8£3,063 GBP
Retailer 5£3,546 GBP

33 data points across 9 retailers

21 retailers£1,633 GBP to £3,546 GBP

B+
Cheapest Retailer
-
£1,633 GBP
B+
Retailer 2
-
£1,664 GBP
View
B+
Retailer 3
-
£1,670 GBP
View
B+
Retailer 4
-
£1,725 GBP
View
B+
Retailer 5
-
£1,732 GBP
View
B+
Retailer 6
-
£1,817 GBP
View
Retailer 7
-
£1,927 GBP
View
Price last confirmed 17 days ago
Retailer 8
-
£1,927 GBP
View
Price last confirmed 21 days ago
B+
Retailer 9
-
£1,956 GBP
View
Retailer 10
-
£2,015 GBP
View
Price last confirmed 20 days ago
Retailer 11
-
£2,034 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
£2,037 GBP
View
B
Retailer 13
-
£2,113 GBP
View
B
Retailer 14
-
£2,175 GBP
View
Retailer 15
-
£2,222 GBP
View
Price last confirmed 61 days ago
Retailer 16
-
£2,222 GBP
View
Price last confirmed 18 days ago
B
Retailer 17
-
£2,251 GBP
View
B
Retailer 18
-
£2,481 GBP
View
C
Retailer 19
-
£3,063 GBP
View
C
Retailer 20
-
£3,546 GBP
View
Most Expensive
NZ Jewellers
77822477-ffa7-4578-b21a-8a10f4543e59 · Oct 17
£4,445 GBP
$5,983 USD
View
Price last confirmed 19 days ago
20 more retailers have this diamond
Prices start from £1,633 GBPSave up to £1,912 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
£1,633 GBP