CaratHunter
Plans
Round|Lab Grown|IGI

1.63ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG450019953

Shape and cutting style on the report: Round brilliant

Certificate IGI LG450019953

Diamond specifications and retailer prices

From £262 GBP
$351 USD
As of October 29, 2026
Save £2,067 GBP (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,329 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.63ct lab-grown round diamond

This 1.63ct 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 LG450019953 or 450019953. Listed at 18 retailers as of October 29, 2026, with prices from £262 to £2,329, a £2,067 spread on the same certified stone. Do Amore Diamonds lists it at £2,329. 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

1.63
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG450019953
Dimensions7.51 × 7.59 × 4.70 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Chemical Vapor Deposition (CVD) laboratory grown diamond is classified as Type IIa
Top View
7.51 mm7.59 mm1.63 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG450019953
Side View
Table 57.5%Crown 34.5°Girdle: MediumPavilion 41.5°Culet: NoneDepth 62.3%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: £2,329 GBP|Low: £262 GBP|High: £2,329 GBP|Avg: £736 GBP
Do Amore 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
Retailer 17
Retailer 18
October 30, 2026
Retailer 18£262 GBP
Retailer 15£304 GBP
Retailer 12£321 GBP
Retailer 5£325 GBP
Retailer 14£325 GBP
Retailer 3£399 GBP
Retailer 6£437 GBP
Retailer 7£552 GBP
Retailer 9£562 GBP
Retailer 16£575 GBP
Retailer 11£581 GBP
Retailer 10£631 GBP
Retailer 2£679 GBP
Retailer 17£953 GBP
Retailer 8£983 GBP
Retailer 4£1,153 GBP
Retailer 13£1,409 GBP
Do Amore Diamonds£2,329 GBP

13 data points across 18 retailers

18 retailers£262 GBP to £2,329 GBP

A
Cheapest Retailer
-
£262 GBP
$351 USD
A
Retailer 2
-
£304 GBP
$407 USD
View
B+
Retailer 3
-
£321 GBP
$430 USD
View
A
Retailer 4
-
£325 GBP
$435 USD
View
A
Retailer 5
-
£325 GBP
$435 USD
View
A
Retailer 6
-
£399 GBP
$535 USD
View
A
Retailer 7
-
£437 GBP
$585 USD
View
Retailer 8
-
£552 GBP
$740 USD
View
Price last confirmed 10 days ago
A
Retailer 9
-
£562 GBP
$753 USD
View
A
Retailer 10
-
£575 GBP
$770 USD
View
A
Retailer 11
-
£581 GBP
View
A
Retailer 12
-
£631 GBP
$846 USD
View
A
Retailer 13
-
£679 GBP
$910 USD
View
A
Retailer 14
-
£953 GBP
$1,277 USD
View
A
Retailer 15
-
£983 GBP
$1,317 USD
View
B+
Retailer 16
-
£1,153 GBP
$1,545 USD
View
B+
Retailer 17
-
£1,409 GBP
View
Most Expensive
B
Do Amore Diamonds
27-78B8021BB · Oct 31
£2,329 GBP
$3,120 USD
View
17 more retailers have this diamond
Prices start from £262 GBPSave up to £2,067 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
1.63ct Round
£262 GBP