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Marquise|Natural|GIA

1.22ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 6551312868

Certificate GIA 6551312868

Diamond specifications and retailer prices

From £2,064 GBP
As of November 6, 2026
Save £1,876 GBP (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £4,116 GBP at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.22ct natural marquise diamond

This 1.22ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551312868. Listed at 11 retailers as of November 4, 2026, with a 91% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.22
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.79°
Pavilion angle41.47°
OriginNatural
Grading LabGIA
CertificateGIA 6551312868
Dimensions10.42 × 5.50 × 3.55 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.42 mm5.50 mm1.22 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551312868
Side View
Table 61.0%Crown 39.79°Girdle: MED-THKPavilion 41.47°Culet: NoneDepth 64.5%

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 6
Current: £4,116 GBP|Low: £1,125 GBP|High: £4,116 GBP|Avg: £2,503 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 6, 2026
Retailer 6£1,125 GBP
Retailer 4£1,787 GBP
Retailer 7£1,837 GBP
Retailer 14£2,064 GBP
Retailer 13£2,111 GBP
Retailer 3£2,272 GBP
Retailer 15£2,335 GBP
Retailer 2£2,346 GBP
Retailer 8£2,346 GBP
Retailer 9£2,468 GBP
Retailer 11£2,619 GBP
Retailer 5£2,640 GBP
Retailer 12£3,440 GBP
Retailer 10£3,940 GBP
NZ Jewellers£4,116 GBP

27 data points across 15 retailers

11 retailers£2,064 GBP to £3,940 GBP

B+
Cheapest Retailer
-
£2,064 GBP
B+
Retailer 2
-
£2,111 GBP
View
B+
Retailer 3
-
£2,272 GBP
View
Retailer 4
-
£2,335 GBP
View
Price last confirmed 14 days ago
B
Retailer 5
-
£2,346 GBP
View
B
Retailer 6
-
£2,346 GBP
View
B
Retailer 7
-
£2,468 GBP
View
B+
Retailer 8
-
£2,619 GBP
View
B
Retailer 9
-
£3,440 GBP
View
B
Retailer 10
-
£3,940 GBP
View
Most Expensive
NZ Jewellers
38a43f41-8f11-4da3-bbea-eacfc8532001 · Sep 30
£4,116 GBP
$5,509 USD
View
Price last confirmed 37 days ago
10 more retailers have this diamond
Prices start from £2,064 GBPSave up to £1,876 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+
1.22ct Marquise
£2,064 GBP