Oval|Lab Grown|IGI

1.80ct D SI1 Oval Lab Grown Diamond

VG • D/SI1 • IGI LG519239144

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG519239144

Diamond specifications and retailer prices

From $1,454 NZD
HK$6,400 HKD
As of October 31, 2026
12 retailers carry this diamond
Most expensive: $2,307 NZD at Rare Carat · As of October 18, 2026
View at Rare Carat

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 D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG519239144 or 519239144. Listed at 12 retailers as of October 31, 2026. 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

1.80
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG519239144
Dimensions9.26 × 6.80 × 4.39 mm
L/W Ratio1.36
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
9.26 mm6.80 mm1.80 ctD / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG519239144
Side View
Table 59.5%Crown 37.2°Girdle: STK-THKPavilion 40.4°Culet: NoneDepth 64.6%

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 31
Current: $2,307 NZD|Low: $421 NZD|High: $2,496 NZD|Avg: $1,272 NZD|-7.6%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 19, 2026
Retailer 6$421 NZD
Retailer 5$736 NZD
Retailer 2$746 NZD
Retailer 7$1,173 NZD
Retailer 4$1,356 NZD
Retailer 8$1,447 NZD
Retailer 9$1,454 NZD
Retailer 3$1,976 NZD
Rare Carat$2,307 NZD

27 data points across 9 retailers

12 retailers

Retailer 1
-
$325 NZD
$183 USD
Price last confirmed 29 days ago
Retailer 2
-
$394 NZD
$222 USD
View
Price last confirmed 35 days ago
Retailer 3
-
$421 NZD
$237 USD
View
Price last confirmed 29 days ago
Retailer 4
-
$736 NZD
$415 USD
View
Price last confirmed 13 days ago
Retailer 5
-
$746 NZD
£331 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
$1,173 NZD
$661 USD
View
Price last confirmed 12 days ago
Retailer 7
-
$1,352 NZD
$762 USD
View
Price last confirmed 31 days ago
Retailer 8
-
$1,356 NZD
$764 USD
View
Price last confirmed 12 days ago
Retailer 9
-
$1,447 NZD
$815 USD
View
Price last confirmed 13 days ago
B+
Retailer 10
-
$1,454 NZD
HK$6,400 HKD
View
Retailer 11
-
$1,976 NZD
£877 GBP
View
Price last confirmed 13 days ago
Most Expensive
Rare Carat
519239144_l_519239144 · Oct 18
$2,307 NZD
$1,300 USD
View
Price last confirmed 12 days ago
11 more retailers have this diamond
Prices start from $1,454 NZD

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
$1,454 NZD