CaratHunter
Plans
Oval|Lab Grown|IGI

1.80ct G SI1 Oval Lab Grown Diamond

ID • G/SI1 • IGI LG508138482

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG508138482

Diamond specifications and retailer prices

From $1,180 USD
As of October 30, 2026
Save $2,426 USD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,018 USD at NZ Jewellers · As of October 28, 2026
View at NZ Jewellers

About this 1.8ct lab-grown oval diamond

This 1.8ct lab-grown oval sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG508138482 or 508138482. Listed at 12 retailers as of October 30, 2026, with a 206% 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

1.80
Carat
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG508138482
Dimensions9.50 × 6.94 × 4.29 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.50 mm6.94 mm1.80 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG508138482
Side View
Table 64.0%Crown 34.2°Girdle: THN-STKPavilion 41.2°Culet: NoneDepth 61.8%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: $1,180 USD|Low: $1,180 USD|High: $6,205 USD|Avg: $2,857 USD|-11.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 1$1,180 USD
Retailer 5$1,848 USD
Retailer 8$2,069 USD
Retailer 6$2,144 USD
Retailer 9$2,310 USD
Retailer 2$2,947 USD
Retailer 7$3,362 USD
Retailer 4$3,606 USD
Retailer 3$6,156 USD

41 data points across 9 retailers

12 retailers$1,180 USD to $3,606 USD

B+
Cheapest Retailer
-
$1,180 USD
B
Retailer 2
-
$1,848 USD
View
B
Retailer 3
-
$2,011 USD
View
B
Retailer 4
-
$2,069 USD
View
Final sale: no returns
Retailer 5
-
$2,144 USD
View
Price last confirmed 18 days ago
B
Retailer 6
-
$2,144 USD
View
B
Retailer 7
-
$2,310 USD
View
B
Retailer 8
-
$2,947 USD
£2,321 GBP
View
B
Retailer 9
-
$3,362 USD
View
B
Retailer 10
-
$3,606 USD
View
Most Expensive
NZ Jewellers
5e0cc16e-8945-4cca-b726-f41097540ed9 · Oct 28
$4,018 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,180 USDSave up to $2,426 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.

B+
1.80ct Oval
$1,180 USD