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Marquise|Natural|IGI

1.50ct L SI1 Marquise Natural Diamond

VG • L/SI1 • IGI 512234554

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 512234554

Diamond specifications and retailer prices

From £2,419 GBP
As of November 6, 2026
Save £992 GBP (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,411 GBP at Cape Diamonds · As of November 5, 2026
View at Cape Diamonds

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 512234554. Listed at 8 retailers as of November 5, 2026, with prices from £2,419 to £3,411, a £992 spread on the same certified stone. Cape Diamonds lists it at £3,411. 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

1.50
Carat
L
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle45.4°
Pavilion angle30.3°
OriginNatural
Grading LabIGI
CertificateIGI 512234554
Dimensions10.58 × 6.21 × 3.32 mm
L/W Ratio1.70
Girdle conditionFaceted
Culet sizePointed
Top View
10.58 mm6.21 mm1.50 ctL / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI 512234554
Side View
Table 66.0%Crown 45.4°Girdle: STK-VTKPavilion 30.3°Culet: NoneDepth 53.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £3,411 GBP|Low: £2,038 GBP|High: £3,435 GBP|Avg: £2,713 GBP|+2.6%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4£2,043 GBP
Retailer 5£2,419 GBP
Retailer 6£2,480 GBP
Retailer 2£2,566 GBP
Retailer 3£3,271 GBP
Cape Diamonds£3,411 GBP

42 data points across 6 retailers

8 retailers£2,419 GBP to £3,411 GBP

Retailer 1
-
£2,043 GBP
Price last confirmed 7 days ago
B
Retailer 2
-
£2,419 GBP
View
B
Retailer 3
-
£2,480 GBP
View
B
Retailer 4
-
£2,566 GBP
View
B
Retailer 5
-
£2,678 GBP
View
B
Retailer 6
-
£2,903 GBP
View
B
Retailer 7
-
£3,271 GBP
View
Most Expensive
B
Cape Diamonds
cert_512234554 · Nov 5
£3,411 GBP
ZAR 73,754 ZAR
View
7 more retailers have this diamond
Prices start from £2,419 GBPSave up to £992 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
1.50ct Marquise
£2,419 GBP