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Marquise|Lab Grown|IGI

1.30ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG817653480

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG817653480

Diamond specifications and retailer prices

From $342 SGD
As of November 1, 2026
Save $871 SGD (72%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,360 SGD at Reve Diamonds · As of October 25, 2026
View at Reve Diamonds

About this 1.3ct lab-grown marquise diamond

This 1.3ct lab-grown marquise sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG817653480 or 817653480. Listed at 15 retailers as of November 1, 2026, with a 254% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.30
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle38.5°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817653480
Dimensions11.10 × 5.56 × 3.84 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.10 mm5.56 mm1.30 ctE / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG817653480
Side View
Table 59.0%Crown 38.5°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 64.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $618 SGD|Low: $227 SGD|High: $1,801 SGD|Avg: $845 SGD|-12.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Reve Diamonds
October 31, 2026
Retailer 10$227 SGD
Retailer 3$342 SGD
Retailer 8$434 SGD
Retailer 7$442 SGD
Retailer 6$492 SGD
Retailer 4$580 SGD
Retailer 1$618 SGD
Retailer 11$883 SGD
Retailer 2$939 SGD
Retailer 9$1,184 SGD
Retailer 5$1,213 SGD
Reve Diamonds$1,360 SGD

34 data points across 12 retailers

15 retailers$342 SGD to $1,213 SGD

Retailer 1
-
$249 SGD
Price last confirmed 29 days ago
Retailer 2
-
$289 SGD
View
Price last confirmed 22 days ago
Retailer 3
-
$309 SGD
View
Price last confirmed 34 days ago
B+
Retailer 4
-
$342 SGD
View
Retailer 5
-
$434 SGD
View
Price last confirmed 10 days ago
Retailer 6
-
$442 SGD
View
Price last confirmed 10 days ago
Retailer 7
-
$492 SGD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$580 SGD
View
B+
Retailer 9
-
$618 SGD
View
Retailer 10
-
$883 SGD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$939 SGD
View
Retailer 12
-
$994 SGD
View
Price last confirmed 37 days ago
Retailer 13
-
$1,184 SGD
View
Price last confirmed 11 days ago
B
Retailer 14
-
$1,213 SGD
View
Most Expensive
Reve Diamonds
7986C9E70 · Oct 25
$1,360 SGD
$1,065 USD
View
Price last confirmed 12 days ago
14 more retailers have this diamond
Prices start from $342 SGDSave up to $871 SGD

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+
1.30ct Marquise
$342 SGD