CaratHunter
Plans
Oval|Lab Grown|IGI

1.81ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG512221639

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG512221639

Diamond specifications and retailer prices

From $417 USD
As of October 30, 2026
Save $888 USD (68%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,305 USD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 1.81ct lab-grown oval diamond

This 1.81ct lab-grown oval sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG512221639 or 512221639. Listed at 12 retailers as of October 28, 2026, with prices from $417 to $1,305, a $888 spread on the same certified stone. Rare Carat lists it at $1,305. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.81
Carat
D
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.9°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512221639
Dimensions9.52 × 6.80 × 4.30 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.52 mm6.80 mm1.81 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG512221639
Side View
Table 60.5%Crown 36.9°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 63.2%

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 30
Current: $1,305 USD|Low: $392 USD|High: $1,410 USD|Avg: $784 USD|-7.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 5$417 USD
Retailer 2$433 USD
Retailer 6$667 USD
Retailer 4$768 USD
Retailer 7$819 USD
Retailer 8$819 USD
Retailer 3$1,119 USD
Rare Carat$1,305 USD

41 data points across 8 retailers

12 retailers$417 USD to $1,305 USD

Retailer 1
-
$184 USD
Price last confirmed 29 days ago
Retailer 2
-
$223 USD
View
Price last confirmed 34 days ago
Retailer 3
-
$238 USD
View
Price last confirmed 28 days ago
B+
Retailer 4
-
$417 USD
View
A
Retailer 5
-
$433 USD
£341 GBP
View
B+
Retailer 6
-
$667 USD
View
Retailer 7
-
$765 USD
View
Price last confirmed 30 days ago
B
Retailer 8
-
$768 USD
View
B
Retailer 9
-
$819 USD
View
B
Retailer 10
-
$819 USD
HK$6,400 HKD
View
B
Retailer 11
-
$1,119 USD
£881 GBP
View
Most Expensive
B
Rare Carat
512221639_l_512221639 · Oct 28
$1,305 USD
View
11 more retailers have this diamond
Prices start from $417 USDSave up to $888 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
1.81ct Oval
$417 USD