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Marquise|Natural|GIA

1.01ct K SI1 Marquise Natural Diamond

EX • K/SI1 • GIA 6445683166

Certificate GIA 6445683166

Diamond specifications and retailer prices

From £1,798 GBP
As of November 1, 2026
Save £2,128 GBP (54%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,926 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.01ct natural marquise diamond

This 1.01ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6445683166. Listed at 16 retailers as of November 1, 2026, with prices from £1,798 to £3,926, a £2,128 spread on the same certified stone. NZ Jewellers lists it at £3,926. 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

1.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.48°
Pavilion angle39.68°
OriginNatural
Grading LabGIA
CertificateGIA 6445683166
Dimensions11.02 × 5.14 × 3.04 mm
L/W Ratio2.14
Top View
11.02 mm5.14 mm1.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6445683166
Side View
Table 64.0%Crown 37.48°Girdle: ThickPavilion 39.68°Culet: NoneDepth 59.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,926 GBP|Low: £1,798 GBP|High: £3,951 GBP|Avg: £2,523 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 12£1,798 GBP
Retailer 5£1,828 GBP
Retailer 3£1,835 GBP
Retailer 4£1,918 GBP
Retailer 14£2,006 GBP
Retailer 13£2,042 GBP
Retailer 7£2,115 GBP
Retailer 11£2,120 GBP
Retailer 6£2,216 GBP
Retailer 15£2,355 GBP
Retailer 8£2,386 GBP
Retailer 2£2,467 GBP
Retailer 9£2,751 GBP
Retailer 10£3,758 GBP
NZ Jewellers£3,926 GBP

45 data points across 15 retailers

16 retailers£1,798 GBP to £3,926 GBP

B+
Cheapest Retailer
-
£1,798 GBP
B+
Retailer 2
-
£1,828 GBP
View
B+
Retailer 3
-
£1,835 GBP
View
B+
Retailer 4
-
£1,918 GBP
View
B
Retailer 5
-
£2,006 GBP
View
B
Retailer 6
-
£2,042 GBP
View
Retailer 7
-
£2,115 GBP
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,120 GBP
View
B
Retailer 9
-
£2,216 GBP
View
B
Retailer 10
-
£2,355 GBP
View
B
Retailer 11
-
£2,386 GBP
View
B
Retailer 12
-
£2,467 GBP
View
Retailer 13
-
£2,710 GBP
View
Price last confirmed 14 days ago
B
Retailer 14
-
£2,751 GBP
View
B
Retailer 15
-
£3,758 GBP
View
Most Expensive
B
NZ Jewellers
5d46a64b-87e1-496b-825a-f5fa6d94c580 · Nov 5
£3,926 GBP
$5,284 USD
View
15 more retailers have this diamond
Prices start from £1,798 GBPSave up to £2,128 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+
1.01ct Marquise
£1,798 GBP