Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

VG • D/SI1 • GIA 1548559371

Certificate GIA 1548559371

Diamond specifications and retailer prices

From £3,675 GBP
As of November 4, 2026
Save £3,683 GBP (50%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £8,375 GBP at NZ Jewellers · As of September 30, 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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1548559371. Listed at 27 retailers as of November 4, 2026, with a 100% 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
D
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle39.91°
Pavilion angle41.77°
OriginNatural
Grading LabGIA
CertificateGIA 1548559371
Dimensions10.17 × 5.48 × 3.60 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.17 mm5.48 mm1.20 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1548559371
Side View
Table 62.0%Crown 39.91°Girdle: STK-VTKPavilion 41.77°Culet: NoneDepth 65.7%

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: £4,858 GBP|Low: £3,299 GBP|High: £7,466 GBP|Avg: £4,969 GBP|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 11
Retailer 12
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Retailer 23
Retailer 24
November 6, 2026
Retailer 21£3,675 GBP
Retailer 5£3,912 GBP
Retailer 3£3,956 GBP
Retailer 23£3,959 GBP
Retailer 4£4,008 GBP
Retailer 22£4,187 GBP
Retailer 6£4,229 GBP
Retailer 17£4,473 GBP
Retailer 16£4,536 GBP
Retailer 13£4,612 GBP
Retailer 2£4,673 GBP
Retailer 10£4,684 GBP
Retailer 18£4,755 GBP
Retailer 1£4,858 GBP
Retailer 24£4,906 GBP
Retailer 7£5,050 GBP
Retailer 9£5,050 GBP
Retailer 15£5,126 GBP
Retailer 12£5,142 GBP
Retailer 8£5,222 GBP
Retailer 19£6,110 GBP
Retailer 14£6,786 GBP
Retailer 11£7,258 GBP
Retailer 20£7,358 GBP

22 data points across 24 retailers

27 retailers£3,675 GBP to £7,358 GBP

B+
Cheapest Retailer
-
£3,675 GBP
B+
Retailer 2
-
£3,912 GBP
View
B
Retailer 3
-
£3,956 GBP
View
B
Retailer 4
-
£3,959 GBP
View
B
Retailer 5
-
£4,008 GBP
View
B+
Retailer 6
-
£4,113 GBP
View
B+
Retailer 7
-
£4,187 GBP
View
Final sale: no returns
B+
Retailer 8
-
£4,229 GBP
View
B
Retailer 9
-
£4,473 GBP
View
Retailer 10
-
£4,536 GBP
View
Price last confirmed 37 days ago
Retailer 11
-
£4,536 GBP
View
Price last confirmed 37 days ago
B
Retailer 12
-
£4,612 GBP
View
B
Retailer 13
-
£4,673 GBP
View
Retailer 14
-
£4,684 GBP
View
Price last confirmed 37 days ago
B
Retailer 15
-
£4,755 GBP
View
B
Retailer 16
-
£4,858 GBP
View
Retailer 17
-
£4,906 GBP
View
Price last confirmed 36 days ago
B
Retailer 18
-
£5,050 GBP
View
B
Retailer 19
-
£5,050 GBP
View
B
Retailer 20
-
£5,126 GBP
View
B
Retailer 21
-
£5,142 GBP
View
B
Retailer 22
-
£5,222 GBP
View
Retailer 23
-
£5,234 GBP
View
Price last confirmed 39 days ago
B
Retailer 24
-
£6,110 GBP
View
B
Retailer 25
-
£7,258 GBP
View
B
Retailer 26
-
£7,358 GBP
View
Most Expensive
NZ Jewellers
02b8a415-cb91-4c2f-8723-7658e88a3a04 · Sep 30
£8,375 GBP
$11,210 USD
View
Price last confirmed 37 days ago
26 more retailers have this diamond
Prices start from £3,675 GBPSave up to £3,683 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
£3,675 GBP