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Round|Lab Grown|IGI

1.59ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG371992363

Shape and cutting style on the report: Round brilliant

Certificate IGI LG371992363

Diamond specifications and retailer prices

From £374 GBP
$501 USD
As of October 30, 2026
Save £1,559 GBP (81%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,933 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 1.59ct lab-grown round diamond

This 1.59ct lab-grown round sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG371992363 or 371992363. Listed at 9 retailers as of October 29, 2026, with prices from £374 to £1,933, a £1,559 spread on the same certified stone. Do Amore Diamonds lists it at £1,933. 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

1.59
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG371992363
Dimensions7.48 × 7.45 × 4.67 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.48 mm7.45 mm1.59 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG371992363
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,933 GBP|Low: £341 GBP|High: £1,933 GBP|Avg: £685 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 5£374 GBP
Retailer 3£377 GBP
Retailer 6£443 GBP
Retailer 7£504 GBP
Retailer 8£621 GBP
Retailer 4£828 GBP
Retailer 9£959 GBP
Retailer 2£1,198 GBP
Do Amore Diamonds£1,933 GBP

16 data points across 9 retailers

9 retailers£374 GBP to £1,933 GBP

A
Cheapest Retailer
-
£374 GBP
$501 USD
A
Retailer 2
-
£377 GBP
$505 USD
View
A
Retailer 3
-
£443 GBP
$593 USD
View
Retailer 4
-
£504 GBP
$675 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
£621 GBP
$833 USD
View
B+
Retailer 6
-
£828 GBP
$1,109 USD
View
A
Retailer 7
-
£959 GBP
$1,285 USD
View
B+
Retailer 8
-
£1,198 GBP
View
Most Expensive
B
Do Amore Diamonds
27-5BC832090 · Oct 29
£1,933 GBP
$2,590 USD
View
8 more retailers have this diamond
Prices start from £374 GBPSave up to £1,559 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.

A
1.59ct Round
£374 GBP