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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 $351 USD
As of October 29, 2026
Save $2,769 USD (89%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,120 USD 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 $351 to $3,120, a $2,769 spread on the same certified stone. Do Amore Diamonds lists it at $3,120. 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
Color
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

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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 29
Current: $3,120 USD|Low: $351 USD|High: $3,120 USD|Avg: $986 USD
Do Amore Diamonds
Retailer 2
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Retailer 18
October 30, 2026
Retailer 18$351 USD
Retailer 15$407 USD
Retailer 12$430 USD
Retailer 5$435 USD
Retailer 14$435 USD
Retailer 3$535 USD
Retailer 6$585 USD
Retailer 7$740 USD
Retailer 9$753 USD
Retailer 16$770 USD
Retailer 11$778 USD
Retailer 10$846 USD
Retailer 2$910 USD
Retailer 17$1,277 USD
Retailer 8$1,317 USD
Retailer 4$1,545 USD
Retailer 13$1,888 USD
Do Amore Diamonds$3,120 USD

13 data points across 18 retailers

18 retailers$351 USD to $3,120 USD

A
Cheapest Retailer
-
$351 USD
A
Retailer 2
-
$407 USD
View
B+
Retailer 3
-
$430 USD
View
A
Retailer 4
-
$435 USD
View
A
Retailer 5
-
$435 USD
View
A
Retailer 6
-
$535 USD
View
A
Retailer 7
-
$585 USD
View
Retailer 8
-
$740 USD
View
Price last confirmed 9 days ago
A
Retailer 9
-
$753 USD
View
A
Retailer 10
-
$770 USD
View
A
Retailer 11
-
$778 USD
£613 GBP
View
A
Retailer 12
-
$846 USD
View
A
Retailer 13
-
$910 USD
View
A
Retailer 14
-
$1,277 USD
View
A
Retailer 15
-
$1,317 USD
View
B+
Retailer 16
-
$1,545 USD
View
B+
Retailer 17
-
$1,888 USD
£1,487 GBP
View
Most Expensive
B
Do Amore Diamonds
27-78B8021BB · Oct 31
$3,120 USD
View
17 more retailers have this diamond
Prices start from $351 USDSave up to $2,769 USD

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
$351 USD