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Marquise|Natural|GIA

3.01ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5566211621

Certificate GIA 5566211621

Diamond specifications and retailer prices

From £27,725 GBP
As of November 5, 2026
Save £3,034 GBP (10%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £37,908 GBP at Helzberg Diamonds · As of October 11, 2026
View at Helzberg Diamonds

About this 3.01ct natural marquise diamond

This 3.01ct natural marquise sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566211621. Listed at 12 retailers as of November 5, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

3.01
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle37.59°
Pavilion angle38.75°
OriginNatural
Grading LabGIA
CertificateGIA 5566211621
Dimensions14.81 × 7.59 × 4.52 mm
L/W Ratio1.95
Culet sizeNone
Top View
14.81 mm7.59 mm3.01 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5566211621
Side View
Table 60.0%Crown 37.59°Girdle: STK-THKPavilion 38.75°Culet: NoneDepth 59.6%

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 5
Current: £37,908 GBP|Low: £23,521 GBP|High: £37,908 GBP|Avg: £28,911 GBP
Helzberg Diamonds
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
Retailer 16
November 5, 2026
Retailer 7£23,521 GBP
Retailer 16£25,114 GBP
Retailer 6£25,671 GBP
Retailer 8£26,393 GBP
Retailer 4£26,424 GBP
Retailer 14£26,692 GBP
Retailer 2£27,725 GBP
Retailer 12£29,720 GBP
Retailer 9£29,765 GBP
Retailer 11£29,765 GBP
Retailer 15£30,064 GBP
Retailer 3£30,155 GBP
Retailer 10£30,759 GBP
Retailer 5£30,844 GBP
Retailer 13£36,116 GBP
Helzberg Diamonds£37,908 GBP

36 data points across 16 retailers

12 retailers£27,725 GBP to £30,759 GBP

Retailer 1
-
£23,521 GBP
Price last confirmed 25 days ago
Retailer 2
-
£25,114 GBP
View
Price last confirmed 30 days ago
Retailer 3
-
£25,671 GBP
View
Price last confirmed 27 days ago
Retailer 4
-
£26,424 GBP
View
Price last confirmed 26 days ago
B+
Retailer 5
-
£27,725 GBP
View
B+
Retailer 6
-
£28,705 GBP
View
Retailer 7
-
£29,720 GBP
View
Price last confirmed 15 days ago
B
Retailer 8
-
£29,765 GBP
View
B
Retailer 9
-
£29,765 GBP
View
B
Retailer 10
-
£30,759 GBP
View
Retailer 11
-
£30,844 GBP
View
Price last confirmed 28 days ago
Most Expensive
Helzberg Diamonds
XZRLLMMIHHMIH · Oct 11
£37,908 GBP
$50,739 USD
View
Price last confirmed 26 days ago
11 more retailers have this diamond
Prices start from £27,725 GBPSave up to £3,034 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+
3.01ct Marquise
£27,725 GBP